Alarm-lock



(No Model.) 5 sheets-'sheen 14.

4J. W. KOEN.

ALARM LOCK.

No. 542,479. l Patented July fs, 1895.

WLM/mw 54mm/Mme wmwy/ www@ NO MOBL) I V 5 Sheets--Sheet 2.

l J. W. KUHN.

ALARM LOCK. No. 542,479. j Patented JulyQ, 1895.

my 0L 0b W (No Model.) 4 5 Sheets-Sheet 3.

J. W. KOH-N.

ALARM LOCK.

No. 542,479.` Pented July 9, 1.895.

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(N o Model.)

` 5 Sheets-Sheet 4. J. W. KOEN.

ALARM LOCK.

479.' Patented July 9, 1895.Y

' (No Model.) 5`Sheets-Sheet 5.

Jfw. KOHN.

ALARM LOOK.

No. 542,479. Patented July 9, 1895.

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Unirse STATES PA'rnNT Orrrcn.

JACOB WILLIAM KOHN, OF NEWARK, ASSIGNOR TO GEORGE O. STEIGER, OF NEWBRUNSWICK, NEW JERSEY.

ALARM-p-LOCK.

SPECIFICATION forming part of Letters Patent No. 542,479, dated July 9,1895.' y

Application tiled November 2, 1893.' Renewed January 18, 1895. SerialNo. 535,416. (No model.)

T0 all wil/0m it mwy OOM/067%: elevation of a portion of a doorto whichthe Be it known that I, JACOB WILLIAM KOEN, invention has been appliedand showing the a citizen of the United States, residing atescutcheon-plate with a knob for turning the Newark, in the county ofEssex and State of spindle, anight-lock finger-piece, and a shield 5 5 5New Jersey, have invented vcertain new and for the soundopening in theirrelative posinseful Improvements in Alarm-Locks; and I tions and thebell and lock in outline. do hereby declare the following to be a full,In said drawings,ct indicates the door, and clear, and exact descriptionof the invention, b the mortise alarm-lock arranged in a morsuch aswillenable others skilled in the art tise or chamber cut into the edge ofthe door. 6o 1o to which it appertains to make and use the t c indicatesthe escutcheonplate; d d', the same, reference being had to theaccompanyd0or-knobs attached to a jointed spindle c c. ing drawings, andto the letters and numerals f indicates the night-lock handle;V g, theof reference marked thereon, which form a Vshield attached to theescutcheon-plate and part of this specication. covering thesound-opening h, formed in said 65 I5 The objects of this invention areto provide plate, and also the coinciding sound-opening a mortise-lockwithalarm attachments which h of the door, and t' is the alarm-belladapted will enable an alarm to be sounded when the to be inserted inthe mortise with the lock, knob is turned from the outside, to reducethe latter being extended to provide a bearing the cost of construction,to simplify the mechfor said bell. 7o zo anism and render the same moredurable, and Within the lock-ease j, consisting of a metal to secureother advantages and results, some face-platej, adapted to lie againstthe edge of which will be referred to in connection with of the door,the shallow casting jl, preferably the description of the working parts.of cheapermetal than the face-plate and se- The invention consists inthe improved cured thereto by screws js, and acup-platej4, 5 z5alarm-lock and in the arrangements and com- Fig. l0, are arranged thelocking mechanisms 'binations of parts, all substantially as will be andmeans for sounding an alarm on the hell. hereinafter set. forth, andfinally embraced Of said locking and alarm mechanisms, k inin theclauses of the claim. dicates a latch-bolt; Z, a tumbler' for the same,

Referringto the accompanying drawings,in arranged on the section e ofthe spindle, the 8o 3o which like letters and numerals indicate corarmsm m ot' which engage the bearings -n n responding parts in each of theseveral views, of the latch-holt, so as to repress said bolt Figure lisa plan of the lock, the cap-plate bewhen the tumbler is turned in eitherdirecing removed to show the interior construction tion by the spindle.A spring o serves to and operation of the parts. Fig. la is a sectionhold the latch-bolt outward in its latching or y8 5 3 5 on line y, andFig. lb is a reverse detail of a locking position.

key-tumbler. Fig. 2 is a view similar to Fig. The latch may be locked sothat it cannot 5.. l, with certain parts modified in construction. berepressed by the tumbler l and spindle-sec- Fig. 3 is another View ofthe modification, tion e by means of a tumblerp, the arm q of showingthe latch-bolt broken away and the which enters between fingers rr ofthe latch- 9o 4o latch-tumbler removed to illustrate the unbolt.l Saidtumbler at one end of its pivotal derlying parts more clearly. Fig. 4 isa dehub is provided with a key-recess s, Figs. la tail view illustratingthe construction of a and 1P, adapted to allow a night-key, Fig. 7,certain night-lock. Fig. 5`is still another plan to be employed fromutheoutside of the door y. of the modification, showing the latch-bolt inturning the said hub and repressing the 495 45 drawn back. Fig. 6 is adetail plan of the latch-bolt. The other endof saidhub, wherebell-tumbler and jointed lever. Fig. 7 is a `it extends through thelock-case and lies iiush View of a key that may be employed. Figs. withthe outside thereof, as indicated in Fig. S and 9 show anothernight-lock of varied la, is slotted or otherwise formed, as at t, toeonstruction,showing the locking and unlcckreceive a dead-latch, lock,or fastener u, Fig. 10o 5o ing positions and Fig. 10 is a sectional View4, which is fastened to the `interior side of the taken on line x, Fig.2. Fig. 11 is a front door on a suitableinside plate in line with thesaid slotted hub, the said latch or fastener entering into the slot ttolock the tumbler or prevent pivotal movement of the hub. The saiddead-latch, lock, or fastener is provided, where it projects from thedoor, with a fingerpiece which operates the latch or fastener, so as toprevent pivotal action of the tumbler p. The preferred dead -latch orfastener is shown in Fig. 4, in which n is abearing-plate, which may bea part of the escutcheon-plate, either integral or an independent piecesoldered or otherwise attached to said plate and providing bearingsadapted to allow a pivotal movement of the nger-piecef. At the rear ofsaid bearing-plate are ways 3, between which the dead-latch slides toand from the slot t in the tumbler p.

The dead-latch u, is provided with a screwshank 4, which enters thethreaded fingerpiecef, so that the pivotal action of said iinger-pieceproduces the desired movementof the latch to and from the slot in thetumbler p to fasten or release the said tumbler.

The latch-bolt 71; may be locked by other means than those abovedescribed. For eX- ample, I may employ a dead-latch, such as shown inFigs. 8, 9, and 10, in which the linger-piecefis provided with a shankf', havinga pin f2, working in an inclined groovef3 in a sleeve f4,adapted to be inserted in the door ct and to hold the shank f. Thesleeve and its shank are so disposed as to engage the bearing 5 of thelatch-bolt lo, when the said shank is forced inward by turning the pinf2 on the incline of the groovef, as will be understood. At the side ofthe tumbler Zon the section e of the spindle connecting with the outsidedoor-knob d is arranged analarmtumbler 6, having arms 7 7, which engagea jointed lever S, fulcrumed at 9 to the case y2.-

Variations may be made in the relations of the tumbler-arms 7 7 to thelever 8, as may be noted by comparing Fig. l with Fig. 3; but thepreferred construction is indicated in Fig. 1, where the lever isprovided with a V- shaped notch or recess 10, Fig. 6, in which one ofthe tumbler-arms 7 works in either direction with about the same ease.The other tumbler-arm 7 is disposed between stops l1 11, which limit themovements of said tumbler, so that the first said arm 7 cannot pass outfrom the recess l0 when the tumbleris turned. A spring 12 serves to holdthe lever 8 against its tumbler. Said lever at its free end engages abell-hammer 13, arranged on a fulcrum 14, and is drawn into alarmingcontact with the bell i by a spring 15. The movement of the lever islimited and controlled by a stop 16, which holds the hammer normallyaway from the bell.

To allow the lever 8 to slide back to operative position after soundingan alarm in connection with the bellhammer,I have jointed the same, asshown clearly in Fig. 6, the end 17 being pivoted at 18 to the body ofthe lever. The said end 17 is so formed and disposed in its relation tothe body as not to turn in its forward or alarming movement, but in itsreturn movement it turns pivotally and rides over the end of thehammerlever. This action is secured by round-ing the portion of the end17, which engages the body of the lever at one side thereof and makingthe opposite side angular, so that a shoulder is formed, which preventspivotal movement when said shoulder engages the body portion of thelever.

It will be understood from the foregoing that the action resulting fromthe turning of the outside door-'knob is only to sound an alarm and thatthe action of the interior knob is to repress the latch-bolt 7c andallow the door to be opened, and such repression of the latch-boltcannot be secured from the outside of the door except by a key, and evena key cannotopen the door lwhen the deadlatch fastens the key-tumbler p;but at all times the outside knob may be turned to produce an alarm. Tosecure this independence of action of the two knobs,l have jointed theknob-spindle so that one section works pivotally independent of theother. The preferred method of joining is shown in Fig. 10, where thesections are provided respectively with male and female threads, whichhold the parts together, but allow the independent pivotal movementrequired.

Under some conditions it may be desirable to cut off the alarmmechanisms, and in this event I employ a repression-piece 20, attachedto a turn-piece 2l, havinga pin 22 workingin an inclined slot 23, formedin acylindrical receptacle in the lock-case, which repressionpiece atits inner end engages the lever 8, and, when forced inward, throws saidlever from engagement with the alarm-tumbler, as will be understood. V

The slight pressure of therepression-piece required to prevent thejoined end or pawl17 from engaging the bell-hammer is entirely an endpressure, and thus the bearings of said piece on the turn-piece 2l andthe end of the cylindrical part of the lock-case containing saidturn-piece are sufficient to hold said repression-piece in position.

To cause the pivoted end 17 of the lever 8 to quickly return to itsnormal position, I may employ a weighted extension 34, which may be castintegral with said end piece or otherwlse.

Having thus described the invention, what Iclaim as new isl. Theimproved alarm lock herein described, in which is combined with the lockcase, an alarm bell, a hammer for sounding an alarm thereon, a tumblerwithin said case for operating said hammer, a latch or locking bolt, c,and a sectional spindle provided with knobs on opposite sides of saidlock case which are independently operable, one operating the tumblerfor the alarm bell and the other the latch or bolt 7c, all substantiallyas set forth.

2. In an alarm lock, the case, the sectional p spindle, the `sections ofwhich are independ- IOO IIO

ently operable from opposite sides of the door, tumblers arrangedwithin-the lock case at pposite sides of the joint therein, a lever 8having the pivoted end piece, 17, and havinga V shaped notch to receivethe arm 7 of the tumbler, 6, said bell hammer and an alarm bell,

all arranged and combined substantially as set forth.

3. Incombinationwith the case of an alarm lock adapted to be inserted inthe mortise of a door, a latch 7c spindle, e, in sections operable oneindependent of the other, tumblers arranged on said spindle, one at theside of the other on opposite sides of the joint in said spindle, alever 8, having a pivoted end section, 17, a spring 12 holding saidlever to one of said tumblers, a spring, o, holding latch, la, to theother, an alarm bell-hammer and bell engaged by the section 17, a keytumbler, p, for operating the latch Without operating the alarm, andknobs for operating the spindle sections from opposite sides of thedoor, substantially as set forth.

4. In an alarm lock.the combination with a sectional spindle and itsknobs, tumblers arranged on said sections, one operating the latch boltand the other the alarm bell mechanisms, said latch bolt and alarmmechanisms, a key tumbler for operating the latch bolt from the side ofthe door having the alarm bell-operating knob and a dead latch operablefrom the inside of the door to prevent repression of said latch bolt,all su bstantially as and for the purposes set forth.

5. In an alarm lock,the combination therein, of a sectional spindle onesection of which operates alarm operating mechanisms and the other latchoperating mechanisms, an alarm bell, and latch and said mechanisms foroper- 1 a key-tumbler adapted to operate the latch independently of thelatch operating spindle and a dead lock for preventing the unlatching ofthe latch, substantially as set forth.

6. In an alarm lock, the combination with the latch, jointed lever 8,independent tumblers, jointed spindle and alarm mechanisms, a repressionpiece, 20, attached to a turn piece arranged in a slotted cylinder ofthe lock case and said lock case having said slotted cylinder and turnpiece therein adapted to give longitudinal movement to the repressionpiece as the same is turned to throw the alarm mechanisms from thealarm-sounding position, substantially as set forth.

7. In an alarm lock, the combination with the slotted key tumbler andthe latch operated thereby7 of the pivotal linger piece, f, and thesliding dead latch u, adapted to enter the slot of said `tumbler to locksaid tumbler,

,ger'piece, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this20th dayl of October, 1893.

JAcoB WILLIAM Koi-1N.

Witnesses:

CHARLES I-I. PELL, OLIVER DRAKE.

